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.H. J. HANCOCK.

spwme MACHINE.

No. 67,535. Patented Aug. 6, 1867.

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HENRY .T. HANCOCK, or NEW YORK, N. Y. Letters Patent No. 67,535, datedAug last 6, 1867.

IMPROVEMENT IN SEWING MACHINES,

TO ALL WHOM IT MAY CONCERN.-

Be it known that I, HENRY J. HANCQCK, of the city, county, and State ofNew York, have invented a.

certain new and useful Improvement on Sewing Machines, of which thefollowing is a full, clear, and exact description, reference being badto the accompanying drawin.g,-forming partof this specification, inwhich? Figure 1 represents a. side elevation of a sewing machineconstructed according to my impro-vement, and

Figure 2 a. horizontal section of the same through the line .2 z in fig.1.

Similar letters of reference indicate corresponding parts in bothfigures.

The nature of my invention consists in a novel means or mode ofadjusting the clot'h-bcd or table relatively to'and for operation incombination with a stationary foot or. presscr, to adapt the machine tovarious thicknesses of material, and to regulate with nicety anddispatch the holdof the workto the action of the needle in a cheap andsimple but efficient manner. This my'invention is shown as applied to asingle-thread machine, making a chain or tambour stitch, by means of anordinary tauibour or hook-eyed needle that is made both to produce thestitch and effect the feed of'the cloth, to admit 'of or facilitatewhich itis highly important that the retention of the cloth on thetable, while comparatively firm, should be easy or-free, aud capable ofnice and rapid adjustment to prevent injury to the needle and secureregularity in the feed This my invention accomplishes in a manner; thatentails but atrifling expense, andis therefore applicable to cheap-builtmachines of the character described, and whioh may be used to advantagefor quilting and other purposes.

Referring fto the accompanying drawing, A B and C is the frame of themachine, which may be made of cast iron. 'Said 1nachine may beheld to orsecured pm a bench or table by means of a plate, a, projecting fromtheportiou A of the frame and binding-scrcw b. D is the spool-spindle orsupport, on which the spool is allowed to freely turn. Eis a rod orshaft, operated by a wheel, F, in the rear, for giving, by means of acrank or cranked formation, a, to said rod in front, the necessaryup-and-down and lateral motions to the needle G, to work it in and outof the cloth, and effect the feed of the latter; said needle beingfreely connected at its top with the crank c, and Working loosely orfreely below, through a guide, 61, and slot e, of a stationary foot orpresser, H,attachcd to the portion C of the frame. This needle is of atambour or hook-eyed construction atits point, and works through a slotin the table I, corresponding to the slot e of thefoot H. The table I iscarried by an arm, J, pivoted as atf to the portion A of the frame, andprovided with-a stem or projection g, the object of which will behereinafter described. I

The thread, represented byrod lines in the drawing) is passed from thereel round a tension-stud or stem, h, and from thence passed through theeye of a spring, arranged on the under side of the cloth-table I, out toand in front of the latter. The general action is similar to that ofcertain other machines, the needle in its descent penetrating the cloth,and in its ascent catching the thread and forming a slack loop above thecloth,

which in the next operation of the needle has the thread passed throughit to produce the stitch, the needle also by its lateral movementfeeding the cloth. To secure a sufiicientlyfirm yet free and readilyadjustable hold of the cloth on the table I, said table, which iscarried by the lever or pivoted arm J, is raised or lowered with thegreatest dispatch yet nicety, tosuit difi'erent thicknesses of materialor other requirements, by means. of a milled or other disk, K, turningon a centre, as at 2', on the plate aof the frame, and of a wedge-shapedor inclined construction on its upper face, the same being arrangedbelow the stem y of the arm J, so that on turning the disk in a suitabledirection the table I is raised, or, by turning it in an oppositedirection, lowered by its weight, and that of the arm J, and in bothpositions of adjustments a firm basis or support given to the table.

What I here claim as my inventlon, and desire to secure'by LettersPatent, is-

The combination of the wedge-shaped adjustable disk K with the raisingand lowering cloth-table I, and stationary foot or presser H, foroperation together substantially as specified and for the purpose orpurposes herein set forth.

HENRY J. HANCOCK.

Witnesses:

J. W. CooMBs, G. W. Raan.

